CN103439033A - Clamp vibrating wire type tension measuring device for fiber rib - Google Patents
Clamp vibrating wire type tension measuring device for fiber rib Download PDFInfo
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- CN103439033A CN103439033A CN2013104251517A CN201310425151A CN103439033A CN 103439033 A CN103439033 A CN 103439033A CN 2013104251517 A CN2013104251517 A CN 2013104251517A CN 201310425151 A CN201310425151 A CN 201310425151A CN 103439033 A CN103439033 A CN 103439033A
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- measuring
- measuring force
- force
- measuring device
- fiber bar
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Abstract
The invention belongs to the technical field of in-situ test equipment, and relates to a clamp vibrating wire type tension measuring device for a fiber rib. A force measuring device is arranged on the upper part of the whole device and comprises a clamp block, a vibrating wire, a permanent magnet, a coil, a soft iron block, fastening screws and a pressure sensing membrane, wherein two ends of the vibrating wire are respectively fixed on a pressure block through the fastening screws, and the pressure block at the bottom end is placed on the pressure sensing membrane; the soft iron block is fixedly arranged on the vibrating wire, one end of the permanent magnet is in butt joint with the soft iron block while the coil is arranged at the other end of the permanent magnet; screw holes are uniformly formed in both sides of the force measuring device, respectively; an upper groove is formed below the force measuring device, and a lower groove is formed in the lower part of the whole device corresponding to the upper groove; the upper and lower parts of the whole device are fixedly connected as a whole through bolts. The clamp vibrating wire type tension measuring device for the fiber rib is simple in structure, convenient to operate, small in size, light in weight and convenient to install and test and read.
Description
Technical field:
The invention belongs to the in-situ test equipment technical field, relate to a kind of fixture type vibration wire fiber bar tension measuring device, tensile test for civil engineering work in-situ test fiber bar, make up the deficiency that the pulling force of fiber bar can only be tested in laboratory, convenience quick for installation, method of operating is simple.
Background technology:
At present, apply gradually various new materials in civil engineering construction, for example, in reinforced soil retaining wall, adopt fiber bar as reinforcement, the electronic puller system of existing dynameter only can, in the indoor tensile strength of measuring fiber bar, there is not yet and can be used for open use and the relevant report that the tension measurement equipment of fiber reinforced material tensile test is carried out at scene.Therefore, design a kind of type vibration wire of the fixture for on-the-spot test fiber bar tension measuring device and there is important social reality meaning.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, seek design a kind of fixture type vibration wire fiber bar tension measuring device is provided, principle according to reinforcement stresses instrumentation examination reinforcement stresses, the dynamometry of type vibration wire reinforcing rib meter partly with after fixture combines is fixed on fiber bar, when fiber bar is stressed, make the frequency of the stressed and then dynamometry of tautness meter part change, thereby measure pulling force.
To achieve these goals, agent structure of the present invention is divided into upper and lower two parts, comprises device for measuring force, screw-socket, upper groove, low groove and bolt; Device for measuring force adopts the string-vibrating force-measuring device, and device for measuring force is arranged on the top of whole device; Device for measuring force comprises fixture block, vibratory string, permanent magnet, coil, soft iron piece, trip bolt and pressure-sensitive diaphragm; The two ends of vibratory string are fixed on briquetting by trip bolt respectively, and the briquetting of bottom is placed on pressure-sensitive diaphragm; Fixedly be shaped with the soft iron piece on vibratory string; One end of the permanent magnet of U-shaped structure docks with the soft iron piece, is shaped with coil on the other end; The both sides of device for measuring force are uniformly distributed respectively and are shaped with screw, and the top of screw is smooth structure, and the bottom of screw is helicitic texture; The device for measuring force below has upper groove, and the bottom of whole device and upper groove corresponding position have low groove, and the concave surface of upper groove and low groove is helicoid, and the end of upper groove and low groove is rounding; The employing of two parts up and down of whole device is connected to one and forms fixture type vibration wire fiber bar tension measuring device with the bolt of screw same structure.
The pass of the stress of tension measuring device of the present invention and frequency modulus and temperature is: when ambient temperature is constant, when device for measuring force only is subject to axial deformation, the stress σ ' of device for measuring force and the variation delta F of the frequency modulus of output have following linear relationship:
σ′=k×ΔF （1）
ΔF=F-F
0 （2）
Wherein, the least count that k is device for measuring force, unit is MPa; The device for measuring force output valve that Δ F is measurement in real time is with respect to the variable quantity of reference value, and unit is kHz
2; F is the device for measuring force output valve of measuring in real time, and unit is kHz
2; F
0for the reference value of device for measuring force, unit is kHz
2; During use, first fiber bar is put on the tautness meter low groove, the top of whole device and bottom are fixed with bolt afterwards to becoming reconciled, make upper and lower two parts laminating closely, under the pulling force effect, between fiber bar and whole device, the changing of the relative positions does not occur; Use again the external type vibration wire readout instrument reading out data of device for measuring force, according to parameter index, the data that read and formula (1) and (2) pulling force of calculating fiber bar of device; Device is measured initial value after location is installed in time, and performs record and preserve according to instrument numbering and design number.
Compared with prior art, it is simple in structure in the present invention, and easy to operate, volume is little, lightweight, is convenient to installation and survey and reads.
The accompanying drawing explanation:
Fig. 1 is structural principle schematic diagram of the present invention, and wherein (a) is the cross-section structure principle schematic, is (b) the plan structure principle schematic.
The structural principle schematic diagram that Fig. 2 is the device for measuring force that the present invention relates to.
Fig. 3 is the bolt arrangement principle schematic the present invention relates to.
Embodiment:
Below by embodiment, also the present invention will be further described by reference to the accompanying drawings.
Embodiment:
The one-piece construction of the present embodiment is divided into upper and lower two parts, comprises device for measuring force 1, screw-socket 2, upper groove 3, low groove 4 and bolt 5; Device for measuring force 1 adopts the string-vibrating force-measuring device, and device for measuring force 1 is arranged on the top of whole device; Device for measuring force 1 comprises fixture block 6, vibratory string 7, permanent magnet 8, coil 9, soft iron piece 10, trip bolt 11 and pressure-sensitive diaphragm 12; The two ends of vibratory string 7 are fixed on briquetting 6 by trip bolt 11 respectively, and the briquetting 6 of bottom is placed on pressure-sensitive diaphragm 12; Fixedly be shaped with soft iron piece 10 on vibratory string 7; One end of the permanent magnet 8 of U-shaped structure docks with soft iron piece 10, is shaped with coil 9 on the other end; The both sides of device for measuring force 1 are uniformly distributed respectively and are shaped with screw 2, and the top of screw 2 is smooth structure, and the bottom of screw 2 is helicitic texture; Device for measuring force 1 below has upper groove 3, and the bottom of whole device and upper groove 3 corresponding positions have low groove 4, and the concave surface of upper groove 3 and low groove 4 is helicoid, and the end of upper groove 3 and low groove 4 is rounding; The employing of two parts up and down of whole device is connected to one and forms fixture type vibration wire fiber bar tension measuring device with the bolt 5 of screw 2 same structures.
The pass of the stress of the tension measuring device that the present embodiment relates to and frequency modulus and temperature is: when ambient temperature constant, when device for measuring force 1 only is subject to axial deformation, the stress σ ' of device for measuring force 1 and the variation delta F of the frequency modulus of output have following linear relationship:
σ′=k×ΔF （1）
ΔF=F-F
0 （2）
Wherein, the least count that k is device for measuring force 1, unit is MPa; The output valve that Δ F is the device for measuring force 1 of measurement in real time is with respect to the variable quantity of reference value, and unit is kHz
2; The output valve that F is the real-time device for measuring force 1 of measuring, unit is kHz
2; F
0for the reference value of device for measuring force 1, unit is kHz
2; During use, first fiber bar is put on low groove 4, the top of whole device and bottom is rear fixing with bolt 5 to becoming reconciled, make upper and lower two parts laminating closely, between fiber bar and whole device, the changing of the relative positions does not occur under the pulling force effect; Using the readout instrument external with device for measuring force 1 is type vibration wire readout instrument reading out data again, according to parameter index, the data that read and formula (1) and (2) pulling force of calculating fiber bar of device; Device is measured initial value after location is installed in time, and performs record and preserve according to instrument numbering and design number.
Claims (2)
1. a fixture type vibration wire fiber bar tension measuring device, is characterized in that agent structure is divided into upper and lower two parts, comprises device for measuring force, screw-socket, upper groove, low groove and bolt; Device for measuring force adopts the string-vibrating force-measuring device, and device for measuring force is arranged on the top of whole device; Device for measuring force comprises fixture block, vibratory string, permanent magnet, coil, soft iron piece, trip bolt and pressure-sensitive diaphragm; The two ends of vibratory string are fixed on briquetting by trip bolt respectively, and the briquetting of bottom is placed on pressure-sensitive diaphragm; Fixedly be shaped with the soft iron piece on vibratory string; One end of the permanent magnet of U-shaped structure docks with the soft iron piece, is shaped with coil on the other end; The both sides of device for measuring force are uniformly distributed respectively and are shaped with screw, and the top of screw is smooth structure, and the bottom of screw is helicitic texture; The device for measuring force below has upper groove, and the bottom of whole device and upper groove corresponding position have low groove, and the concave surface of upper groove and low groove is helicoid, and the end of upper groove and low groove is rounding; The employing of two parts up and down bolt of whole device is connected to one and forms fixture type vibration wire fiber bar tension measuring device.
2. fixture type vibration wire fiber bar tension measuring device according to claim 1, it is characterized in that the stress of tension measuring device and the pass of frequency modulus and temperature are: when ambient temperature constant, when device for measuring force is subject to axial deformation, the stress σ ' of device for measuring force and the variation delta F of the frequency modulus of output have following linear relationship:
σ′=k×ΔF （1）
ΔF=F-F
0 （2）
Wherein, the least count that k is device for measuring force, unit is MPa; The device for measuring force output valve that Δ F is measurement in real time is with respect to the variable quantity of reference value, and unit is kHz
2; F is the device for measuring force output valve of measuring in real time, and unit is kHz
2; F
0for the reference value of device for measuring force, unit is kHz
2; During use, first fiber bar is put on the tautness meter low groove, the top of whole device and bottom are fixed with bolt afterwards to becoming reconciled, make upper and lower two parts laminating closely, under the pulling force effect, between fiber bar and whole device, the changing of the relative positions does not occur; Use again the external type vibration wire readout instrument reading out data of device for measuring force, according to parameter index, the data that read and formula (1) and (2) pulling force of calculating fiber bar of device; Device is measured initial value after location is installed in time, and performs record and preserve according to instrument numbering and design number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425151.7A CN103439033B (en) | 2013-09-17 | 2013-09-17 | A kind of fixture type vibration wire fiber bar tension measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425151.7A CN103439033B (en) | 2013-09-17 | 2013-09-17 | A kind of fixture type vibration wire fiber bar tension measuring device |
Publications (2)
| Publication Number | Publication Date |
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| CN103439033A true CN103439033A (en) | 2013-12-11 |
| CN103439033B CN103439033B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310425151.7A Active CN103439033B (en) | 2013-09-17 | 2013-09-17 | A kind of fixture type vibration wire fiber bar tension measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104115755A (en) * | 2014-07-11 | 2014-10-29 | 苏州柏德纳科技有限公司 | Stirring rod fixing device |
| CN105181214A (en) * | 2015-05-26 | 2015-12-23 | 苏州华徕光电仪器有限公司 | Vibrating wire pressure sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2252825A (en) * | 1988-05-27 | 1992-08-19 | Yokogawa Electric Corp | Vibrating transducer |
| CA2101810A1 (en) * | 1993-08-03 | 1995-02-04 | Brahim Benmokrane | Cable tension measuring device |
| CN1138163A (en) * | 1996-02-15 | 1996-12-18 | 山东矿业学院 | Steels tring type force sensor |
| CN1346973A (en) * | 2001-11-16 | 2002-05-01 | 长沙金码高科技实业有限公司 | String vibration type sensor with digital memory |
| CN201259451Y (en) * | 2008-10-06 | 2009-06-17 | 湖南省第六工程有限公司 | Through type intelligent stress-strain sensor for detecting stress of prestressed reinforcement |
| CN203443711U (en) * | 2013-09-17 | 2014-02-19 | 青岛理工大学 | Fixture vibrating string-type fiber rib tension measuring device |
-
2013
- 2013-09-17 CN CN201310425151.7A patent/CN103439033B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2252825A (en) * | 1988-05-27 | 1992-08-19 | Yokogawa Electric Corp | Vibrating transducer |
| CA2101810A1 (en) * | 1993-08-03 | 1995-02-04 | Brahim Benmokrane | Cable tension measuring device |
| CA2101810C (en) * | 1993-08-03 | 2004-03-30 | Brahim Benmokrane | Cable tension measuring device |
| CN1138163A (en) * | 1996-02-15 | 1996-12-18 | 山东矿业学院 | Steels tring type force sensor |
| CN1346973A (en) * | 2001-11-16 | 2002-05-01 | 长沙金码高科技实业有限公司 | String vibration type sensor with digital memory |
| CN201259451Y (en) * | 2008-10-06 | 2009-06-17 | 湖南省第六工程有限公司 | Through type intelligent stress-strain sensor for detecting stress of prestressed reinforcement |
| CN203443711U (en) * | 2013-09-17 | 2014-02-19 | 青岛理工大学 | Fixture vibrating string-type fiber rib tension measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104115755A (en) * | 2014-07-11 | 2014-10-29 | 苏州柏德纳科技有限公司 | Stirring rod fixing device |
| CN105181214A (en) * | 2015-05-26 | 2015-12-23 | 苏州华徕光电仪器有限公司 | Vibrating wire pressure sensor |
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| Publication number | Publication date |
|---|---|
| CN103439033B (en) | 2016-02-10 |
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Inventor after: Zhang Mingyi Inventor after: Bai Xiaoyu Inventor after: Tang Hongxia Inventor after: Shao Zhiguo Inventor after: Liu Zhigang Inventor before: Tang Hongxia Inventor before: Zhang Mingyi Inventor before: Bai Xiaoyu Inventor before: Shao Zhiguo Inventor before: Liu Zhigang |
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